Saturday, December 29, 2018
Saturday, December 22, 2018
Lots of things are happening this time of year. One thing we are keeping a close eye on are the Hemlock Woolly Adelgids, HWAs for short. Left to their own devices they will exterminate Hemlocks in the eastern United States. The only long term solution is to develop populations of the predatory insects that keep the adelgids under control in other parts of America. In the Pacific Northwest they have hemlocks and adelgids co-existing nicely. This is because even though the adelgids are invasive, originally from Asia, strains of predatory beetles have grown to love them andprey almost exclusively on the adelgids, leaving all the other arboreal fauna and flora alone. We started releasing the Sasajiscymnus tsugae beetle nearly three years ago. They feed mainly in the summer and seem to be doing a good job where they are but they spread really slowly. Yesterday we started releasing a different beetle that has seen great success where it has been inoculated. We would like everyone to join us in welcoming Laricobius nigrinus to Whites Creek Gorge!